On the multiplicity of the second eigenvalue of Laplacian in \(\mathbb{R}^ 2\)

DOI10.4310/CAG.1995.V3.N2.A3zbMath0849.35086OpenAlexW2702187932MaRDI QIDQ1909687

Li-Qun Zhang

Publication date: 9 May 1996

Published in: Communications in Analysis and Geometry (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.4310/cag.1995.v3.n2.a3

zbMATH Keywords

multiplicity of the second eigenvalue

Mathematics Subject Classification ID

General topics in linear spectral theory for PDEs (35P05) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05)

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